/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.paimon.hadoop;

import org.apache.hadoop.conf.Configuration;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

/** Wraps a {@link Configuration} to be {@link Serializable}. */
public class SerializableConfiguration implements Serializable {

    private static final long serialVersionUID = 1L;

    private transient Configuration hadoopConf;

    public SerializableConfiguration(Configuration hadoopConf) {
        this.hadoopConf = hadoopConf;
    }

    private void writeObject(ObjectOutputStream out) throws IOException {
        out.defaultWriteObject();
        hadoopConf.write(out);
    }

    private void readObject(ObjectInputStream in) throws ClassNotFoundException, IOException {
        in.defaultReadObject();
        hadoopConf = new Configuration(false);
        hadoopConf.readFields(in);
    }

    public Configuration get() {
        return hadoopConf;
    }
}
